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Why does heat flow from a hot ob...

Why does heat flow from a hot object to a cold object?

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Because entropy increases when heat flows from hot object to cold object. If heat were to flow from a cold to a hot object, entropy will decrease leading to violation of second law thermodynamics.
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FULL MARKS-HEAT AND THERMODYNAMICS-TEXTUAL EVALUATION SOLVED (II. Short Answer Questions)
  1. What is PV diagram ?

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  2. Why the specific heat capacity of constant pressure is greater than th...

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  3. Give the equation of state for an isothermal process.

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  4. Define isothermal process. Derive an expression for work done in isoth...

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  5. Express the change in internal energy in terms of molar specifi...

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  6. Apply first law for (a) an isothermal (b) adiabatic (c) isobaric proce...

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  7. Give the equation of state for an adiabatic process.

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  8. Give an equation state for an isochoric process.

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  9. If the piston of a container is pushed fast inward .Will th...

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  10. Define the following terms: (a) Isothermal process (b) adiabatic proce...

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  11. What is a cyclic process ?

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  12. What is meant by reversible and irreversible processes ?

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  13. State Clausius form of the second law of thermodynamics.

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  14. State Kelvin- Planck statement of second law of thermodynamics.

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  15. Define heat engine .

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  16. What are processes involves in a Carnot engine?

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  17. Can the given heat energy be completely converted to work in...

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  18. State the second law of thermodynamics in therms of entropy.

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  19. Why does heat flow from a hot object to a cold object?

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  20. Obtain the Coefficient of performance (COP). (beta).

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